Volume 7, Book 72, Number 850:
Narrated Mu’adh bin Jabal
While I was riding behind the Prophet and between me and him and between me and him there
was only the back of the saddle, he said, “0 Mu’adh!” I replied, “Labbaik, 0 Allah’s Apostle, and
Sa’daik!” he said, “Do you know what is Allah’s right upon his slave?” I said, “Allah and His Apostle
know best” He said “Allah’s right upon his slaves is that they should worship Him alone and not wor –
ship anything else besides Him.” Then he proceeded for a while and then said, “O Muadh bin Jabal!” I
replied, “Labbaik, O Allah’s Apostle:, Sa’daik!’ He said, “Do you know what is the right of the slaves
upon Allah if they do that?” I replied, “Allah and His Apostle know best.” He said, “The right of the
slaves upon Allah is that He will not punish them (if they do that).”